first get the lcd
2- 2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60
3- 3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60
4- 4,8,12,16,20,24,28,32,36,40,44,48,52,56,60
5- 5,10,15,20,25,30,35,40,45,50,55,60
6- 6,12,18,24,30,36,42,48,54,60
the lcd is 60 so the ans is 60